Canna 'Sophie Buchner' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
Canna 'Soudan' is a medium-sized Italian Group cultivar, with dark leaves and orange flowers.
Canna 'South Pacific Scarlet' is a medium-sized Premier Group cultivar, with green leaves and red flowers.
Souvenir de Antoine Crozy is a synonym of Antonin Crozy.
Souvenir de François Gaulin requires research.
Canna 'Souvenir de Jeanne Crozy' is a medium-sized Crozy Group cultivar, with green leaves and yellow flowers.
Canna 'Souvenir de Madame Crozy' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
Canna 'Souvenir de Madame Nardy' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Souvenir de President Carnot is a synonym of President Carnot.
Canna 'Souvenir de Robert Owen' is a medium-sized Crozy Group cultivar, with dark leaves and red flowers.
Canna 'Souvenir de Roussain' is a medium-sized cultivar, with green leaves and red flowers.
Sparks_x000D_
Canna 'Sparks'
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see Guttermanni_x000D_
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Canna 'Sparks' - see Guttermanni
Canna 'speciosa (Roscoe) Hook.' is a medium-sized cultivar, with green leaves and multi-coloured flowers.
Canna 'Spiderman' is a giant Foliage Group cultivar, with green leaves and red flowers.
Canna 'Spotted Fever' is a small Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Spritzii' is a medium-sized Foliage Group cultivar, with green leaves and orange flowers.
Canna 'Stadt Fellbach' is a medium-sized Crozy Group cultivar, with green leaves and orange flowers.
Canna 'Stadtrath Heidenreicht' is a medium-sized Crozy Group cultivar, with dark leaves and red flowers.
Canna 'Star of India' is a small Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Starlight' is a medium-sized cultivar, with green leaves and white flowers.